diff --git a/src/main/java/com/rabbitmq/client/impl/Frame.java b/src/main/java/com/rabbitmq/client/impl/Frame.java
index 5024bf167..0171681dc 100644
--- a/src/main/java/com/rabbitmq/client/impl/Frame.java
+++ b/src/main/java/com/rabbitmq/client/impl/Frame.java
@@ -214,7 +214,7 @@ public void write(int b) {
 
                 @Override
                 public void write(byte[] b) {
-                    buf.writeBytes(buf);
+                    buf.writeBytes(b);
                 }
 
                 @Override